Adjustable arm rest attachment



FIG. 1 is a perspective view of an adjustable arm rest attachment, showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a side elevational view taken from the left in FIG. 1 thereof;

FIG. 6 is a bottom plan view thereof; and

FIG. 7 is a perspective view of an adjustable arm rest attachment showing a second embodiment of my new design. 

The ornamental design for an adjustable arm rest attachment, as shown and described. 